is it a, beijing, b, new york, c, london or d, moscow? stay tuned, we'll tell you the correct answer, go to cnn.com/fareed. and follow us on twitter or subscribe to us on facebook. if you miss a show, go to itunes. this week's book of the week is an e-book, david frum's "why romney lost" he is a conservative who believes that president obama was vulnerable and could have been beaten. but he details how the republican party blew it. trapped in a cocoon of tv commentators and consultants who fed it fantasies. it is very smart and it is quite short. >>> now, for the last look. much has been made of the signature of jacob lew, who if confirmed will be the nation's next treasury secretary. this could be on our currency. but on deeper examination, it seems that might never happen. tim geithner's regular signature is this. but he says he changed it to this, more ledgible version to sign your dollar bills. we asked a few of our favorite formers if their signatures on greenbacks were their regular signatures or whether they had changed them. rober